Commissioning And Adjusting Preparations; Filling And Venting - Nibe F470 Installer Manual

6 Commissioning and adjusting
Preparations
1.
Check that the switch (SF1) is in position "
Check that the filling valve (QM11) is fully closed.
2.
Caution
Check the miniature circuit-breaker (FC1) in the
heat pump. It may have tripped during trans-
portation.

Filling and venting

FILLING THE HOT WATER HEATER
1. Open a hot water tap in the house.
2. Open the externally mounted filler valve. This valve
should then be fully open during operations.
When water comes out of the hot water tap, the
3.
hot water heater is full and the tap can be closed.
FILLING THE CLIMATE SYSTEM
1. Check that the shut-off valves for the heating system
(QM31) and (QM32) are open.
Open the vent valves (QM20) and (QM21).
2.
Check that the flexible hose enclosed is connected
3.
between the filling valves (QM11) and (QM13).
Connect the hose if this has not already been done.
4. Open the filler valves (QM11), (QM13). The heating
section and the rest of the climate system are filled
with water.
5. When the water that exits the vent valves (QM20)
and (QM21) is not mixed with air, close the valves.
6. After a while, the pressure begins to rise on the
pressure gauge (BP5). When the pressure reaches
2.5 bar (0.25 MPa) the safety valve (FL2) starts to
release water. Close the filling valve (QM11) and
(QM13).
7. Reduce the boiler pressure to the normal working
range (approx. 1 bar) by opening the vent valves
(QM20) and (QM21) or the safety valve (FL2).
NIBE F470
8. Check that there is water in the overflow cup
(WM1).
If the overflow cup requires topping up:
".
1. Turn the safety valve for hot water (FL1) anticlock-
wise carefully.
VENTING THE CLIMATE SYSTEM
1. Turn off the power supply to the heat pump.
2. Vent the heat pump via the vent valve (QM20) and
the rest of the climate system via its respective vent
valves.
Vent the supply air coil via its vent valve (QM21).
3.
NOTE
The vent pipe from the container must be
drained of water before air can be released.
This means that the system is not necessarily
bled despite the flow of water when the bleed
valve (QM20) is opened.
QM13
WM1 QM32 QM11
Chapter 6 | Commissioning and adjusting
FL2 FL1
QM31
QM21
SF1
FC1
BP5
QM20
33